they could fine tune the car a bit more (what do they use on their race cars?) even in the video they were talking about uncontrolled body movement.

I'm not going to argue just to argue, and I'm not saying that is isn't/won't be great, I am saying that it could be a little bit better, maybe the track performance could be exactly the same but the rise could be more comfortable with no uncontrolled motion

Seems like you're being nitpicky on something you haven't yet experienced. You also have to keep in mind, this is the BASE model Corvette they're unveiling here. Why would they throw their full-on race technology into it, when they'll have the Z06 following in a year or two?